I just need it to tow my little boy around in his bike trailer. I've been using my older son's Trek hybrid but he is going to take it to college with him next month. I've towed using my road bike but it's not really comfortable for the task so I'd prefer to ride more upright. Anyway, just wondering if anyone has a turn key bike that would fit a 5'8" guy who rides a 53/54 cm road bike. Hybrid or city bike would be perfect. I'd probably put on an adjustable stem if it's a cyclocross bike. Thanks.